Direct Measurement of A{sub b} using Charged Kaons at the SLD Detector
- SLAC
We report a new measurement of A{sub b} using data obtained by SLD in 1997-98. This measurement uses a vertex tag technique, where the selection of a b hemisphere is based on the reconstructed mass of the bottom hadron decay vertex. The method uses the 3D vertexing capabilities of SLD's CCD vertex detector and the small and stable SLC beams to obtain a high b-event tagging efficiency and purity of 78% and 97%, respectively. Charged kaons identified by the CRID detector provide an efficient quark-antiquark tag, with the analyzing power calibrated from the data. We obtain a preliminary result of A{sub b} = 0.997 {+-} 0.044 {+-} 0.067.
- Research Organization:
- Stanford Linear Accelerator Center, Menlo Park, CA (US)
- Sponsoring Organization:
- USDOE Office of Energy Research (ER) (US)
- DOE Contract Number:
- AC03-76SF00515
- OSTI ID:
- 10511
- Report Number(s):
- SLAC-PUB-8200
- Country of Publication:
- United States
- Language:
- English
Similar Records
Direct Measurement of A{sub b} using Charged Kaons at the SLD Detector
An improved inclusive measurement of A{sub c} using the SLD detector
Direct Measurement of A{sub c} using Inclusive Charm Tagging at the SLD Detector
Technical Report
·
Wed Jul 14 00:00:00 EDT 1999
·
OSTI ID:10118
An improved inclusive measurement of A{sub c} using the SLD detector
Conference
·
Mon Jul 20 00:00:00 EDT 1998
·
OSTI ID:291059
Direct Measurement of A{sub c} using Inclusive Charm Tagging at the SLD Detector
Technical Report
·
Wed Jul 14 00:00:00 EDT 1999
·
OSTI ID:10117